Transonic Go!

An F/A-18F Super Hornet crosses the speed of sound while performing at New York Air Show at Jones Beach in Wantagh, New York on May 23, 2009 (photo credit?). The condensation of water we see around the plane caused by a rapid expansion and consequent adiabatic cooling of air parcels induced by the shock (expansion/compression) waves caused as the plane outruns sound waves in front of it. Me, I just thought this was a cool photo for a Wednesday.